systemd менеджер по системе и сервису (systemd system and service manager)
Описание (Description)
systemd is a system and service manager for Linux operating
systems. When run as first process on boot (as PID 1), it acts as
init system that brings up and maintains userspace services.
Separate instances are started for logged-in users to start their
services.
systemd
is usually not invoked directly by the user, but is
installed as the /sbin/init symlink and started during early
boot. The user manager instances are started automatically
through the user@.service(5) service.
For compatibility with SysV, if the binary is called as init
and
is not the first process on the machine (PID is not 1), it will
execute telinit
and pass all command line arguments unmodified.
That means init
and telinit
are mostly equivalent when invoked
from normal login sessions. See telinit(8) for more information.
When run as a system instance, systemd interprets the
configuration file system.conf and the files in system.conf.d
directories; when run as a user instance, systemd interprets the
configuration file user.conf and the files in user.conf.d
directories. See systemd-system.conf(5) for more information.